System controlling soluble phosphorus and nitrates and other nutrients, and a method of using the system

ABSTRACT

The invention includes an alkali metal silicate based solution that, either alone or following an alkali earth metal salt activator, binds soluble phosphorus and/or nitrates.

CROSS REFERENCE TO RELATED APPLICATIONS

Not applicable.

FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT

Not applicable.

MICROFICHE APPENDIX

Not applicable.

BACKGROUND OF THE INVENTION

(1) Field of the Invention

The present invention generally relates to systems of chemicals andsolutions for controlling substances that are nutrients for plants andmicroorganisms when available in optimal amounts, but which areconsidered contaminants when available in overabundance. Such controlmay optimize the use of abundant animal waste as fertilizers, withoutadversely affecting surface water. More preferably, the presentinvention involves solutions that bind soluble phosphorus and nitratescommonly found in animal waste and fertilizers (and the soil upon whichthose are spread), rendering them unavailable for leaching into adjacentsoil or water. Moreover, the present invention relates to treatments forsoil including chicken litter or other animal waste. The presentinvention also includes methods of using said solutions, and methods ofusing the combination of said solution(s) and animal waste treatedtherewith to provide a fertilizer or soil addendum.

This invention relates to a system for controlling the availability ofplant nutrients and perhaps other growth factors, together with themethod of using the contaminant remedial composition. Contamination ofsoil and water, by pollutants or even by an overabundance of otherwiseneutral or beneficial substances, are serious environmental concerns atthis time. Great concern has been expressed for decades over theaccumulation and disposal of wastes, especially those accumulatingduring the mass-production of poultry, cattle, swine and other animals.Substances commonly found or accumulating in soil and water includesoluble phosphorus, nitrates, arsenic and selenium. Moreover, althoughmost of those substances are considered to be beneficial plant nutrients(or growth factors for microorganisms) when present in optimalquantities, overabundance may result in over-growth of plants andmicroorganisms that can themselves harm soil (or nearby surface water).

In one typical scenario, chicken litter in poultry houses accumulateswith an overabundance of moisture, ammonia, dust and microbes, adverselyaffecting animal health. That chicken litter often is removed and usedas fertilizer, because of its high content of plant nutrients.Constituents such as soluble phosphorus and nitrates often leach intosurface waters and spawn aquatic overgrowth, causing environmentalproblems such as eutrophication of water sources. The present inventionboth optimizes the availability of plant nutrients for crop growth andreduces (or prevents) the growth of algae and other plants associatedwith eutrophication.

(2) Description of Related Art Including Information Disclosed 37 CFR1.97 and 1.98

Known in the art are various pollution remedial compositions. Forexample, the following patents and unpatented products are arguablyrelated to the patentability of the subject invention:

U.S. Pat. No. 5,478,389 issued to Loomis discloses a pollution remedialcomposition comprising a soluble silicate (preferably sodium silicate),a surfactant, a polyol and water. The Loomis composition may alsoinclude sodium chloride and citric acid, and possibly glycerine. Loomisdoes not disclose the application of any such composition to animalwaste or any other substance or substratum containing an overabundanceof phosphorus, nitrates, moisture, ammonia, arsenic, selenium, dustparticles or microbes, nor is any such application inherent in Loomis.

Some known products such as Alum and AlClear are known to use aluminumsulfate to reduce ammonia and/or soluble phosphorus in chicken litter.However, an excessive level of aluminum sulfate is harmful to soil andanimal health. Another such product, PLT, reduces ammonia in chickenlitter, but has been shown to be corrosive to metals.

BRIEF SUMMARY OF THE INVENTION

One general version of the present invention comprises (includes) asolution for spraying on substrate contaminated with soluble phosphorusand/or nitrates (such as chicken litter), to bind such ortho-phosphateand prevent it from later becoming re-dissolved. Although the inventionhas several embodiments, one basic embodiment also includes an activatorfor applying to the contaminated substrate, then spraying an aqueoussolution of alkali metal silicate for immobilizing the migration ofsoluble phosphorus.

In a more detailed version of the invention, before being applied to thephosphorus-contaminated substrate, an aqueous solution of the followingis prepared: an alkali metal silicate; an anionic surfactant such as anester of organo-phosphoric acid; and a polyol such as polypropyleneglycol. An alkaline earth metal salt based activator may be applied tothe substrate before application of that aqueous solution. Suchcompounds include calcium acetate, magnesium nitrates or bariumchloride.

It is believed that the process involves conversion of solublephosphorus, resulting in the chelating of phosphorus for the formationof an inert dehydrated phospho-silicate apatite. The silicate isbelieved to be a binding agent, for binding metal cations in a stablecomplex. When metal cations such as alkaline earth cations exchange withalkali metal cations, a charge imbalance is created in the silicatecomplex with the result that phosphorus is incorporated in the complexand rendered unavailable for further reaction with other reagents.

One primary object of the present invention is to provide a new andeffective composition for controlling the availability of plantnutrients in soil, together with a method of using the composition.

Another primary object of the present invention is to provide acomposition for adding growth factors to soil, such as a fertilizer orsoil amendment, together with a method of using same.

It is another object of the present invention to provide a compositionthat can effectively reduce the soluble phosphorus content of chickenlitter and other animal waste, or the soil upon which such waste issituated.

It is another object of the present invention to provide a compositionthat can effectively reduce the soluble nitrate content of chickenlitter and other animal waste, or the soil upon which such waste issituated.

It is yet another object of the present invention to provide acomposition that can effectively reduce the arsenic content of chickenlitter and other animal waste, or the soil upon which such waste issituated.

It is also an object of the present invention to provide a compositionthat can effectively reduce the selenium content of chicken litter andother animal waste, or the soil upon which such waste is situated.

It is another object of the present invention to provide a compositionthat can effectively reduce the amount or concentration of moisture,airborne dust and microbes in animal confines such as poultry houses,feed lots and other areas of animal concentration.

It is still another object of the present invention to provide acomposition that can effectively reduce the ammonia concentrations inanimal confines such as poultry houses, feed lots and other areas ofanimal concentration.

Other objects will be apparent from a reading of the written descriptiondisclosed herein, together with the claims.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a table showing the percentage of σ-P removal from aqueoussolution, in Example 1.

FIG. 2 is a table showing σ-P removal from litter treatment, in Example1.

FIG. 3 is a table showing σ-P removal from a second litter treatment, inExample 1.

FIG. 4 is a table showing σ-P removal from a third litter treatmentusing the Mehlich III Extraction Procedure, in Example 1.

FIG. 5 is a comparison of 10% activator and SB for binding phosphorusand nitrate, in Example 2.

FIG. 6 is a comparison of 5% activator and SB for binding phosphorus andnitrate, in Example 2.

FIG. 7 is a graph depicting changes in nitrate concentration of chickenlitter when treated with test solutions, in Example 2.

FIG. 8 is a graph depicting changes in phosphorus concentration ofchicken litter when treated with test solutions, in Example 2.

These drawings illustrate certain details of certain embodiments.However, the invention disclosed herein is not limited to only theembodiments so illustrated. The invention disclosed herein may haveequally effective or legally equivalent embodiments.

DETAILED DESCRIPTION OF THE INVENTION

For the sake of simplicity and to give the claims of this patentapplication the broadest interpretation and construction possible, thefollowing definitions will apply:

The term “plant nutrient” or derivative thereof essentially meansphosphorus and nitrates in a form acceptable to plant metabolism.

The term “growth factor” or derivative thereof essentially means theplant nutrients (soluble phosphorus and nitrates), arsenic and/orselenium.

Also for the sake of simplicity, the conjunctive “and” may also be takento include the disjunctive “or,” and vice versa, whenever necessary togive the claims herein the broadest interpretation and constructionpossible. Likewise, when the plural form is used, it may be taken toinclude the singular form, and vice versa.

The invention disclosed herein is not limited by ingredients to theextent that such materials satisfy the structural and/or functionalrequirements of any claim.

Although the invention has a number of features and variations, its mostgeneral form includes (comprises) a composition for controlling theavailability of plant nutrients in soil, comprising an aqueous alkalimetal silicate. Said plant nutrients may be selected from the groupconsisting of soluble phosphorus and nitrates, and combinations andmixtures thereof. Each of said substances has a common characteristicjustifying its inclusion in this group, namely, these otherwisebeneficial substances may be present in such high concentrations as topresent environmental concerns. One main version of the inventionaffects the plant nutrient soluble phosphorus.

One general version of the invention is a composition wherein saidaqueous alkali metal silicate is selected from the group consisting ofsodium silicate and potassium silicate, and combinations and mixturesthereof. Each of said substances has a common characteristic justifyingits inclusion is this group, namely, acting as a binding agent forbinding metal cations in a stable complex. Said aqueous alkali metalsilicate may include aqueous sodium silicate at a concentration in therange of between about 1% and 42% by weight. Alternately, said aqueousalkali metal silicate may be aqueous potassium silicate at aconcentration in the range of between about 1% and 42% by weight.

Said soluble phosphorus may include (comprise) solid animal waste and,if so, said availability of plant nutrients may be reduced by up to 50%.

Another version of the invention further includes an activator, greatlyenhancing the effectiveness, resulting from unexpected synergiesattributable to the presence of said activator. Said plant nutrients maybe selected from the group consisting of phosphorus and nitrates, andcombinations and mixtures thereof. Said plant nutrient may includesoluble phosphorus, and said activator may include an aqueous alkalineearth metal salt. More particularly, said aqueous alkaline earth metalsalt may be selected from the group consisting of water soluble alkalineearth metal salts, such as (for example) sulfates, nitrates, chloridesand acetates, and combinations and mixtures thereof. Said solublealkaline earth metal salt may be magnesium sulfate at a concentration ofbetween about 1% and 20% by weight. Alternatively, said soluble alkalineearth metal salt may be calcium nitrates at a concentration of betweenabout 1% and 20% by weight.

When using one of the above described compositions, and said solublephosphorus includes solid animal waste, said availability of plantnutrients may be reduced by up to 86%.

Another version of the invention includes a composition described abovewherein said plant nutrient is nitrate. When using one of the abovedescribed compositions, and said soluble phosphorus and nitratesincludes solid animal waste, said availability may be reducedconsiderably; said soluble phosphorus may be reduced by up to 86%, andsaid nitrates may be reduced by up to 99%.

Another version of the invention further includes a surfactant and/or apolyol. More particularly, said surfactant may include an anionicsurfactant, preferably selected from the group consisting of phosphateesters, and combinations and mixtures thereof. Each of said substanceshas a common characteristic justifying its inclusion is this group,namely, lowering the surface tension of the aqueous alkali metalsilicate solution. Even more particularly, said surfactant may be esterof organo-phosphoric acid, preferably in a concentration range ofbetween about 1% and 5% by weight. Even more particularly, said ester oforgano-phosphoric acid may be in a concentration range of about 1% byweight.

Said polyol may be propylene glycol, preferably in a concentration rangeof about 1% by weight.

Another version of the invention includes a composition for addinggrowth factors to soil. Besides the aforementioned plant nutrients(phosphorus and nitrates), said growth factors may be selected from thegroup also consisting of moisture, ammonia, arsenic, selenium, dustparticles and microbes, and mixtures and combinations thereof. Each ofsaid substances has a common characteristic justifying its inclusion isthis group, namely, substances present in poultry litter or animal wastethat, when accumulated or aggregated, is harmful to the environment.This version of the invention essentially manifests additional utilitythrough an independent, secondary use of the above described treatmentcompositions, as a soil amendment or fertilizer. The present inventionis capable of preserving (in the animal waste) enough of the nutrientsnecessary for plant growth, but reducing concentrations that may producenegative environmental impact. One such version includes a combinationof animal waste treated with one of the above described treatmentcompositions for controlling the availability of said growth factors insaid animal waste. More particularly, said treatment composition mayinclude an aqueous alkali metal silicate. Said aqueous alkali metalsilicate may be aqueous sodium silicate at a concentration in the rangeof between about 1% and 42% by weight. Alternatively, said aqueousalkali metal silicate may be aqueous potassium silicate at aconcentration in the range of between about 1% and 42% by weight.

Said growth factor may be soluble phosphorus and, if said solublephosphorus is included in solid animal waste (such as chicken litter,for example), said availability may be reduced by up to 50%.

Another version of this soil addendum version may further include anactivator, especially including an aqueous alkaline earth metal salt.Said aqueous alkaline earth metal salt may be selected from the groupconsisting of water soluble alkaline metal salts such as (for example)sulfates, nitrates, chlorides and acetates, and combinations andmixtures thereof. More particularly, said soluble alkaline earth metalsalt may include magnesium sulfate at a concentration of between about1% and 20% by weight. Alternatively, said soluble alkaline earth metalsalt is calcium nitrates at a concentration of between about 1% and 20%by weight. When said soluble phosphorus is included in solid animalwaste, said availability is reduced by up to 86%.

Said growth factor may include nitrate. When said soluble phosphorus andnitrates are included in solid animal waste, and said availability maybe reduced considerably; said soluble phosphorus may be reduced by up to86%, and said nitrates may be reduced by up to 99%.

In one particular version of a soil amendment version of the invention,said animal waste comprises chicken litter, said soluble alkaline earthmetal salt comprises magnesium sulfate at a concentration of betweenabout 1% and 20% by weight, and said growth factor comprises arsenic. Inanother particular version of a soil amendment version of the invention,said animal waste comprises turkey litter, said soluble alkaline metalsalt comprises calcium acetate at a concentration of between about 1%and 20% by weight, and said growth factor comprises selenium. In yetanother particular version of a soil amendment version of the invention,said animal waste comprises hog manure, said soluble alkaline metal saltcomprises barium chloride at a concentration of between about 1% and 20%by weight, and said growth factor comprises nitrates.

As with the plant nutrient controlling version of the invention, thesoil amendment version may also include a surfactant and/or a polyol;said surfactant may include an anionic surfactant, especially selectedfrom the group consisting of phosphate esters, and combinations andmixtures thereof. Said surfactant may be an ester of organo-phosphoricacid, especially in a concentration range of between about 1% and 5% byweight. More particularly, said ester of organo-phosphoric acid may bein a concentration range of about 1% by weight. Similarly, said polyolmay be propylene glycol, especially in a concentration range of about 1%by weight.

Besides the aforementioned compositions, the invention described hereinalso includes a method of using a composition for controlling theavailability of plant nutrients (described above), comprising the stepsof applying said composition to a substrate susceptible to exposure tounwanted levels of plant nutrients or growth factors. Alternatively,said method may further include the step of mixing the substratum tooptimize uniform contact with the substratum. More particularly, saidmethod may include the initial step of applying an activator to asubstrate susceptible to exposure to unwanted levels of plant nutrientsor growth factors. Even more particularly, said method may furtherinclude the step of allowing the mixed substrate to dry.

The invention disclosed herein may also include a method of using acomposition for adding growth factors to soil, comprising the step ofadding to soil a combination of animal waste and a treatment compositionfor controlling the availability of said growth factors in said animalwaste, described above.

EXAMPLE 1

It has been shown that a silicate blend (“SB”) binds soluble phosphorusin the presence of SB “Activator”. When the treatment sequence utilizesa natural extract from rice hulls (SB “RF”), a 97% reduction in solublephosphorus occurs from a concentration of 2500 ppm.

Previous laboratory studies have sought to determine the relativeeffects of the binding capacity of SB treated litter. Treatabilitystudies have been conducted, designed and implemented with the intent toinvestigate whether phosphorus in chicken litter could be prevented fromleaching once treatments had been performed to chelate phosphorus andthus retard its removal.

Materials and Methods

Initial bench studies were conducted to determine the binding efficiencyof SB in aqueous solution. Under these experimental conditions, solublephosphorus was prepared in concentrations of 2500 ppm and mixed withstandard solutions of SB and SB “RF” and tested for soluble phosphorususing the Vanadomolybdophosphoric Acid Method of Analysis.

Evaporation to Dryness Method

The SB and SB “RF” have proven to be extremely effective in removingphosphate from aqueous solution in bench level testing. To test thesesolutions they were mixed with 100 mL of 2500 ppm P (obtained by thedissolution of KH₂PO₄) stirred for 5 minutes, and then evaporated todryness at 50° C. to the resulting precipitate, 100 ml of deionizedwater were added and stirred overnight. The aqueous portion of therehydrated precipitate was then analyzed according to theVanadomolybdophosphoric Acid Method.

SB Activator Method

Another effective method of removing phosphorus using these twosolutions involves the addition of SB “Activator” to 100 ml of 2500 ppmP followed by the addition of either “RF” or SB original formula. Thesesolutions were stirred for 5 minutes, left overnight, centrifuged andanalyzed for phosphorus.

Results and Discussion

Analysis for phosphorus using the Vanadomolybdophosphoric Acid Methodshowed 99% phosphorus removal using the Original Formula (SB™) and 100%removal using the rice silicate formula (SB “RF”).

Results of the SB and SB “RF” in a treatment scenario using SB“Activator” were completed without drying. The table of FIG. 1summarizes these results.

SB “Activator” alone does not reduce the phosphorus concentration. Forthe “RF” and the SB original formula to be effective for phosphorusremoval they must be heated to dryness. In the presence of “Activator”,the heating step is not necessary. A greater amount of “Activator” isneeded with the “RF” than with the original formula.

Application of the preceding methodology has been adapted for thetreatment of dried chicken litter at the bench level of study andtesting to evaluate methods of treatment with respect to phosphorusreduction. The standard treatment protocol relies on litter obtainedfrom a broiler house having been in use for approximately two years.

Test Procedure for Litter Treatment

Portions of the litter are retained to determine the pre-test nutrientcontent, that is, total P, soluble P (σ-P), and N, K, pH and dry matter:

-   -   1) Approximately 50 pounds of litter (equilibrated to room        temperature and RH) were blended to a uniform mixture in a        Hobart blender for 15 minutes.    -   2) 300 gm samples were removed from the blended sample and        placed into each of 25 (9″×13″) aluminum baking pans.    -   3) One hundred (100) gm samples (comprised of 4-25 gm        sub-samples blended for three minutes) were then removed from        each pan using clean plastic utensils, and placed into        corresponding zip-lock bags and labeled. Four (4) sub-samples        are collected for pre-test evaluation.    -   4) Five (5) pans were randomly treated with the following        application:        -   a. A stock SB “Activator” solution was prepared.        -   b. 300 ml quantities of a 5% stock solution were spray            applied to each of five (5) pans of litter, while hand            mixing. The mixture is allowed to sit at room temperature            until ready for SB application.        -   a. 30 & 50 ml of undiluted SB were spray applied to the            litter/“Activator” mixture, with hand mixing, until all SB            has been added.        -   b. 30 & 50 ml portions of an undiluted formulation using SB            “RF” were spray applied to the litter/“Activator” mixture,            with hand mixing, until completely blended.    -   5) A second set of five (5) pans were treated similarly with SB        as in step 4 and a third set of five (5) pans are treated with        distilled water only.    -   6) The samples were then placed at elated temperature (˜122°        F./35-45% RH), uncovered to effect drying. The samples are        allowed to cure* for 18-48 hours or until dry, prior to testing.    -   7) At the end of the drying cycle, the samples were removed in        2-100 gm* quantities and placed in plastic, zip-lock bags,        labeled, and transported to the laboratory for testing.        *Eight (8) twenty-five gram samples were removed from eight        different locations in the sample mixture and blended for        uniformity. The samples were subdivided into 2-100 gram samples.    -   8) Samples were tested for total P, soluble P (σ-P), and pH.        Chain-of-custody forms accompany each sample batch.

A second litter treatment was conducted with samples treated toreplicate the treatment procedure tabulated in FIG. 2. Since the SB™“RF” indicated a higher P removal, the treatment was conducted using“RF” and the SB™ “Activator”. The results are recorded in FIG. 3.

Test Results from Mehlich III Extraction Procedure

The Mehlich extraction procedure is an aggressive extraction procedurethat measures the relative bioavailability of σ-phosphorus on acid toneutral pH soils. The test is shown to be correlated to crop response tofertilizer phosphorus. In this case, the total resident to-phosphorusloading is quantified (FIG. 4).

In the analysis, it was shown that even with this aggressive leachateprocedure, 74.1% of the phosphorus remains bound and therefore notsubject to runoff. If the earlier, conventional method of extraction iscompared to the Mehlich II procedure, only a difference of 0.057%separates the two methods.

Conclusions

This preliminary study has been conducted under secured laboratoryconditions and the results contained herein culminate bench trialsdesigned to demonstrate the efficacy of treating soluble phosphorussolutions with environmentally non-toxic additives. The ultimate goal isto achieve total phosphorus binding in chicken animal litter destinedfor land application and thus remove the threat of leaching and runoffinto surface waters.

Based on the data generated from these preliminary trials, the bindingof soluble phosphorus in aqueous solution has been achieved by the useof both SB and SB “RF” formulations. The binding effects are enhanced bytotal evaporation to dryness at 50° C. Dryness renders silicates nearlyinsoluble and with their propensity for cationic exchange, reaction withother materials, such as magnesium or calcium compounds, will make thefilm coating completely insoluble.

The reaction has been found to be enhanced by the addition of anotherproprietary solution, SB “Activator”. It has been found that thecombination of the two products in the presence of phosphate will bind97% of the phosphorus in aqueous solution. Similarly, preliminary benchtests to determine the effectiveness of the SB “RF” in reducing solublephosphorus in chicken litter has produced a mean (x) 74.7% reductionusing a 1:1:0.2 litter, Activator, SB mixture. The most recent testcycle (Dec. 14, 2004) establishes the tenacity of the binding processthrough the Mehlich III extraction procedure and confirms therepeatability and relative ease of treatment.

EXAMPLE 2

The question of whether soluble phosphorus and nitrate binding occursduring the treatment process has been addressed. A series of benchstudies have been conducted to determine the binding effects of SB“Activator” formula when applied to chicken litter obtained in de-cakingfrom brooder houses. Variables were introduced to further determine theoptimal range for binding phosphorus while maintaining the nutritionaldemands for nitrate fertilization.

Materials and Methods

Multiple samples of chicken litter were treated initially with 5%solutions of Activator at ratios of 1:1 and 1:0.5, respectively. Addedvariables included the application of 10% solutions of Activatorfollowed by the addition of SB at 20% concentration in the sametreatment sequence ratio.

FIG. 5 illustrates the binding effects of SB and Activator in ratios of0.5:0.2:1 (Activator:SB:litter) with 10% Activator solution.

The data in FIG. 6 illustrates the optimal effect of phosphorus bindingand ready availability of nitrate using a 5% Activator solution at aratio of 1:0.2:1 (Activator:SB:litter).

FIG. 7 below shows the effect on nitrate reduction of varying volumes ofSB (ml of SB per 100 g of chicken litter) using a ratio of 1:1 Activatorper 100 gm of chicken litter. There is an inherent flexibility using SB.Varying levels of nitrate reduction can be obtained by adjusting thevolume of SB. When a 0.2:1 ratio of SB:chicken litter is used, nitratesare not significantly affected and, therefore, are still available whenused as a fertilizer.

The graph in FIG. 7 further illustrates that with increasing volumes ofSB, nitrate reduction is proportionately increased but when compared tothe effects of increased SB, the binding effects of phosphorus arediminished as shown in FIG. 8. The net effect of the appropriateapplication rates combine to provide excellent phosphorus reduction butallowing for no net reduction in nitrate.

The phenomenon of reduced SB gives the best results for phosphorusreduction. It is believed that larger quantities of applied SB lead toextensive polymerization that exclude phosphate rather than incorporateit into the polymer.

CONCLUSIONS

Based on the data generated from the experimental procedures fortreating chicken litter using SB and Activator, it is concluded that theoptimum concentration of Activator is a 5% solution applied at a ratioof 1:1. Whereas, the optimum concentration of SB is a 0.2:1 ratioSB:litter. These ratios and concentrations provide an 86% reduction insoluble phosphorus while maintaining levels of nitrate virtually intact.

The combination and use of various ratios of SB and Activator nowdemonstrates, at the laboratory level, the flexibility to treat chickenlitter for soluble phosphorus reduction, nitrate reduction, and or both,depending on the needs of regional fertilizer applications, or thenecessity to treat in favor of phosphorus reduction. This treatmentcapability will be to the benefit of the environment, while preservingthe nutrients needed by the agricultural community, as required.

Those skilled in the art who have the benefit of this disclosure willappreciate that it may be used as the creative basis for designingdevices or methods similar to those disclosed herein, or to designimprovements to the invention disclosed herein; such new or improvedcreations should be recognized as dependant upon the invention disclosedherein, to the extent of such reliance upon this disclosure.

1. A composition for treating animal waste having naturally excessiveamounts of phosphorus or nitrates, said composition comprising anaqueous alkali metal silicate comprising aqueous sodium silicate at aconcentration in the range of about 20% by weight, an anionic surfactantcomprising an ester of organo-phosphoric acid comprising a concentrationrange of about 1% by weight, and a polyol comprising propylene glycolcomprising a concentration range of about 1% by weight, said compositionchemically binding soluble phosphorus into a stable complex, saidbinding composition able to bind up to 50% of such soluble phosphorus.